giovannoni



G.I GIOVANINONI.

SWITCH FOR GONTROLLINGIGNITION AND STARTING CIRCUITS IN EXPLO SION ENGINES.

APPLICATION FILED'DEC. I9|I9I8.

1,414,734, Patented May 2,1922.

2 SHEETS-SHEET I- o v 22F.

Ilium) G. GIOVANNONI. SWITCH FOR CONTROLLING IGNITION AND STARTING CIRCUITS IN EXPLOSION ENGINES- nrrucmou F ILEI) name. 1918.

1,414,734. Patented 1M2". 1922.

2 SHEETS-SHEET 2.

fni enlar Guglielmo dibnaimani I' I 1776M c plugs euemnmvio erovannonr, or Tunrn, ITALY, ASSIGINQR TO orronrno roMrLIo, 0F

' NEW YORK, n. Y, I

SWITCH FOR oon'rnonmne IGNITION AND STARTING orncnrrs IN EXPLOSION ENGINES.

new and useful Improvements in Switches" for Controlling Ignition and Starting Circuits in Explosion Engines, of which the fol lowing is a specification.

-It is known that in explosion engines hav ing a, plurality, of cylinders and provided with a plurality of magnetos it is required to ascertain by tests {whether any of said magnetos, and consequently the sparking plugs fed by the same, operate in due manner; to this end are at present used sets of usual switches the testshaving tobe made separately for each magneto by manipulating the corresponding switch.

This invention has for its object a device by means of which the several magnetos and sets of'jmagnetos of an engine of the kind above referred to may be controlled automatically, this device having reduced weight and size with regard to the switch sets at present required, so that'it may be easily located and manipulated.

'The annexed drawing shows by way of switch;

' Figure 3 is the front View of the stationary plate. provided with the contacting I Figure 1 is the central section of the cover with the cooperating handle and parts;

ing member, and e Figure 6 is the reversed view of the same. As shown 'in Figure 1, the four magnetos I, II, III, and IV of'the engine are connected by means of wires 23, 24, 25 and 26 with four terminals 17 18, 19, 20 mounted on a stationary insulated plate or disc 8 which 'is also provided with a terminal 4: connected by wire 2 with one terminal or the storage battery, 5 intended a to supply current 'forstarting the engine; the other terminal of said battery is connected by wire 21 with the vibrator 6, a wire 22 leading from, this vibrator to one of the magneto Specification of Letters Patent.

Figure 5 is the front view of the contact Patented ma a, 1922 Application filed December 19, 1918.- Serial No. 2167,452'

terminals of said plate 3 say, in the case illustrated, to terminal 18 connected with the magneto II.- Should it be required, owing to the power of the engine, that two magnetos come into operation on starting the engine, an auxiliary vibrator '6' may be inserted in parallel on the circuit of said battery 5 and vibrator 6, said auxiliary vibrator 6 being connected by wire 21- with wire 21 and by wire 22" with a terminal 8 mounted on plate 3.

On said disc or plate 8 are arranged five radial sets of contact plugs (Figure'3) one of said sets comprises four contact plugs 17, 18,, 19 20 arranged along a radius 0 and connected each with one of said terminals 17, 18, 19,20, The other sets, com

prising respectively the contact plugs arranged along radius I, II, III, IV, are formed each by three contacting plugs con'- nected" with respective terminals, in each of said sets being omitted one of said plugs corresponding to adifferent terminal and magneto than the plug omittedin the other radial sets. The wires connecting together said plugs and terminals are shown by dotted llnes in Figure 3. p

Finally it is to bevnoted that, as, shown in the, drawing,;the contact plugs of the several radial sets correspondingwith the same terminal and magneto, say 17, 1?"- 18-,

I 18-19, 19 20',- 20,- are arranged circumferentially around the centre to which said radialsetsconverge. I

a On said plate or disc 3' are also mounte d plug Szconnecited with terminal 17 leading to the magneto I and plug 87 connected with terminal'Sto which leads the wire 22"connected with the auxiliary'vibrator 6. I I

To said disc or plate 3 is secured a metal cup or cover?) connected electrically with the engine metallic mass or body, in which is pivoted a bar- 10 controlled from outside by means of ahandle 11 and spindle 11 (Figure 4:)1 Said bar 10 extends on opposite sides of spindle 11 to form two arms and is provided on one of said arms with four spring knobs 12, 12, 12", 12"" arranged radially into an insulating block 27, I

said knobs being connected electrically with cover'9 and thence with body by means of bar 10 and spring contact 13 sliding on the inner surface of said cover. The radial positionof said knobs is such as to allow the same to come into contact each with one of the plugs 17-18 -19 20,mounted on the late On the opposite arm of said bar 10 are arranged two contacting knobs.11, -1t the same being insulated'irom the bar but connectedwith each' other and arranged in 5 such a position as to be adapted to come into Contact with plugs 8 and 8 ofplate 3 respeotively. 'Said bar 10 is'finally, provided with a spring angle arm 10 having a knob 15 this latter being arrangedjin such 'aposi tion'asto'come in register with'plug',

mounted on plate and connectedwith terminal t, but without connecting by'gitself' ,nipulating handle llj and bar 10 to carry these latter in the position R. Oni shifting down said knob 16'the plug 4 is'caused' to communicate with body through arm 10,

7 bar 10, contact-Band cover 9 which is con nected with body as above described. V The starting circuitv is thus closed, said circuit comprising-body cover 9, contact 13,-bar 10, arm 10, knob 15, plug 1 and terminal a; wire 2, battery 5, wires21 and 21, vibrator 6, wire 22", terminal 8', plugs 8and.:8 and knobs 14-314 bridging the same, wire 23 connected with one end of primary winding of magneto I and; body to which the oppo site end of this winding is connected as usual., The starting'circuit is also closed in respect to magneto II'as follows: wire 21, vibrator 6, wire 22, terminal 18, wire 24:, primary winding of magneto II and body. Thus owing to operation of vibrators f6 and 6 the primary windings of magnetos I and II are supplied with a vibratory current this latter-inducingn high tension-currentin their secondary windings'which is fedto re- 7 spective sparking plugs by the respective distributors of said magnetosas usualf The spring 28 holds said knob 16 in its usual or nonoperative position shown in Figure 1.

As it may be seen in Figure 3, by carrying the bar 10', by'the-manipulation of its handle 11, into the position in which it is arranged along the radius 0, all the magnetos are carrled out of operation the'w ndings .ofthe 7 same being. connected with body owing to thefact-that plugs 17, 18, 19', and 20, connected with terminals-17 18,19 and 20 and vthence with the] magneto windings, are in contact with their respective knbbs12? ,.12"

connected with this magneto in the plug set located along radius 1; Likewise, by carrying the b'ar lOint'o positions II, III'and IV,

one o'f'magnetos II, III and IV is resp'ec tivelyheld into operation the other ones heing'Y-out of" operation by having their wi'nrt in'gs' connectedwith body as above described; On 'the contrary,. by carrylng the/bar 10 into position R, all'the magnetos are 'in op- .eration as there is no body plug alongthe radius R, this position "corresponding to the normal running of the engine. "Further in this position the circuit/of auxiliary vibrator V 6 is connected with magneto I, the electricallyconneeted kriobslk-l bridging plugs gconnected with body as 8 and 8'.- In'this position of bar 10 the knob 15 is located in register with plug 4:

but is removed from the same, so that by closed as above described.

shifting kno'b16, the starting circuit may be shifted to close thestartingcircuit. 1

knob 16 is 7' By the described device, when it 'is re The engine being'thus started, the opera" tion of the magnetos and ofsparking plugs connected therewith may be tested and 'inspected bymanipulating handle 11 to carry,

1n succession the bar 10 intoposition' I, II, IILIV, so as to bring out ot'operation'three of said magnetos" at each time and leave into operation a different one of themfao cording to said DOSltlOll. and thus the operation of the magnetos is inspected. Durlng this manipulation bywhich a number of magnetos are carried out of operation, the vibrator 6 connected n parallel with v1 brato'r: 6 is disconnected from the c'orre spon'd'ing: magneto I jasthe knobs -14 14J bridge the plugs 8and S leading to said magneto I 'and vibrator 6 respectively, only i when the handle 11 is in its p osition lby' which all the magnetos are in operation whilst in any other position of said handle theplugs 8 andx8 are disconnected,,Thus it is provided that on connecting with the body either of magnetos I or II, the other one may also be connected with body through wire 22, vibrator'6, wire21, vibrator 6, wire 22 and either of corresponding'plugs and terminals 17 and 18 to which lead the wires 23 and '24 connected with said 'magnetos, as it could happen should wire 22'.- be perma nently -connected with terminal 17 Thus no particular manipulation for disconnecting the auxiliary vibrator from its own magneto as it is necessary with the devices at present used to the end of preventing this latter magneto from being connected with body when the magneto to which the other vibrator is connected is caused to communicate with the, body.

The device according to this invention provides within a reduced space all the parts required for controlling and testing the operation of several magnetos of the same engine and allows of effecting the required manipulations in a very easy and quick manner.

What I claim as my invention and desire to secure by United States Letters Patent 1s:

1. A system for controlling ignition and starting circuits in explosive engines comprising, a plurality of magnetos, a starting circuit including a main vibrator and an auxiliary vibrator, the latter adapted to be used when required by the power of the engine, a storage battery in the said starting circult, a switch having a number of contacting parts arranged in a plurality of sets,

means for connecting the'contacting parts of each set with one of the magnetos, means for short-circuiting any required set to put the magnetos connected therewith out of operation, means for connecting a magneto for each vibrator used with one terminal of the starting circuit, means for closing the current through a connection withthe other terminal of the starting current circuit, when said ets of contacts will be excluded from the circuit. 7

2. A system for controlling ignition and starting circuits in explosive engines comprising, a plurality of magnetos, a starting circuit including a main vibrator and an auxiliary vibrator, the latter adapted to be used when required by the power of the engine, a storage battery in the said starting circuit, a switch having a number of contacting parts arranged in a plurality of sets, means for connecting the contacting parts of each set with one of the magnetos, means for short-circuiting any required set to put the magnetos connected therewith out of op eration, means for connecting a magneto for each vibrator used with one terminal of the starting circuit, means for closing the current through a connection with the other terminal of the starting current circuit, when said sets of contacts will be excluded from,

the circuit, and means to exclude the starting circuit when any set of contacts 1s connected 1n the circuit.

3. A system for controlling ignition and starting circuits in explosive engines comprising, a plurality of magnetos, a starting circuit including a'main vibrator and an auxiliary vibrator, the latter adapted to be used when required by the power'of the engine, a torage battery in the said starting circuit, a switch having a number of contacting parts arranged in a plurality ofsets, means for connecting the contacting parts of each set with one of the magnetos, means for short-circuiting any required set to put the magnetos connected therewith out of operation, means for connecting a magneto for each vibrator used with one terminal of the starting circuit, means for closing the current through a connection with the other terminal of the tarting current circuit, when said sets of contacts will be excluded from the circuit, means to exclude the starting circuit when any set of contacts is connected in the circuit, and means for excluding the starting circuitand including all said mag-- netos in the circuit for normal operation of the engine.

4. A system for, controlling ignition and starting circuits in explosive engines comprising, a plurality of magnetos, a starting circuit including a main vibrator and an auxiliary vibrator arranged in parallel with the main vibrator, the auxiliary vibrator adapted to be used when required by the power of the engine, a storage battery in the said starting circuit, a switch having a number of contacting parts arranged in a plurality of sets, means for connecting the contacting parts of each set with one of the magnetos, mean for short-circuiting any required set to put the magnetos connected therewith out of operation, means for connecting a magneto for each vibrator used with one terminal of the starting circuit and means for closing the current through a connection with the other terminal of the starting current circuit.

5. A system for controlling ignition and starting circuits in explosive engines comprising a plurality of magnetos, an insulated base support, a switch on the support having a plurality of contacting parts arranged in groups radially arranged with respect to the support, each group adapted to include individually a diiferent magneto in the circuit; an arm mounted upon the support carrying at one end contact plugs adapted tov contact with the said contacting parts, said arm provided at the other end with other contact plugs, other contact parts arranged uponthe said base for contacting with the last mentioned contact plugs for effecting the starting circuit with an auxiliary vibrator, an extension mounted upon the said arm and at an angle thereto, a movable plug slidably mounted'upon the support and adapted to become electrically connected with the said extension.

Signed at Turin, Italy, this 11th day of October, A. D. 1918. r

GUGLIELMO GIOVANNONI. 

